#define  _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>


int can_split_equally(int a, int b, int c) {
    int total = a + b + c;
    if (total % 2 != 0) {
        return 0; // NO
    }
    int half = total / 2;
    if (a + b == half || a + c == half || b + c == half) {
        return 1; // YES
    }
    return 0; // NO
}

int main() {
    int a, b, c;
    scanf("%d %d %d", &a, &b, &c);

    if (can_split_equally(a, b, c)) {
        printf("YES\n");
    }
    else {
        printf("NO\n");
    }

    return 0;
}